package com.chuangke.quartz.service.impl;

import java.util.List;

import javax.annotation.PostConstruct;

import org.apache.commons.lang3.StringUtils;
import org.quartz.JobDataMap;
import org.quartz.JobKey;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.chuangke.common.exception.ChuangkeException;
import com.chuangke.quartz.constant.ScheduleConstants;
import com.chuangke.quartz.dao.SysJobDaoService;
import com.chuangke.quartz.entity.SysJob;
import com.chuangke.quartz.service.SysJobService;
import com.chuangke.quartz.util.CronUtils;
import com.chuangke.quartz.util.ScheduleUtils;

import cn.hutool.core.util.StrUtil;

/**
 * 定时任务调度信息 服务层
 * 
 * @author ruoyi
 */
@Service
public class SysJobServiceImpl implements SysJobService {

	@Autowired
	private Scheduler scheduler;

	@Autowired
	private SysJobDaoService sysJobDaoService;

	/**
	 * 项目启动时，初始化定时器 主要是防止手动修改数据库导致未同步到定时任务处理（注：不能手动修改数据库ID和任务组名，否则会导致脏数据）
	 */
	@PostConstruct
	public void init() throws SchedulerException {
		scheduler.clear();

		List<SysJob> jobList = sysJobDaoService.list();
		for (SysJob job : jobList) {
			ScheduleUtils.createScheduleJob(scheduler, job);
		}
	}

	/**
	 * 获取quartz调度器的计划任务列表
	 * 
	 * @param job 调度信息
	 * @return
	 */
	@Override
	public List<SysJob> list(SysJob job) {
		QueryWrapper<SysJob> queryWrapper = new QueryWrapper<>();
		if (!StrUtil.isBlank(job.getJobGroup())) {
			queryWrapper.lambda().like(SysJob::getJobGroup, job.getJobGroup());
		}
		if (!StrUtil.isBlank(job.getId())) {
			queryWrapper.lambda().like(SysJob::getId, job.getId());
		}
		if (!StrUtil.isBlank(job.getName())) {
			queryWrapper.lambda().like(SysJob::getName, job.getName());
		}
		if (!StrUtil.isBlank(job.getStatus())) {
			queryWrapper.lambda().like(SysJob::getStatus, job.getStatus());
		}
		if (!StrUtil.isBlank(job.getInvokeTarget())) {
			queryWrapper.lambda().like(SysJob::getInvokeTarget, job.getInvokeTarget());
		}

		return sysJobDaoService.list(queryWrapper);
	}

	/**
	 * 通过调度任务ID查询调度信息
	 * 
	 * @param jobId 调度任务ID
	 * @return 调度任务对象信息
	 */
	@Override
	public SysJob findById(String jobId) {
		return sysJobDaoService.getById(jobId);
	}

	/**
	 * 暂停任务
	 * 
	 * @param job 调度信息
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public void pauseJob(SysJob job) throws SchedulerException {
		String jobId = job.getId();
		String jobGroup = job.getJobGroup();
		job.setStatus(ScheduleConstants.Status.PAUSE.getValue());

		sysJobDaoService.updateById(job);

		scheduler.pauseJob(ScheduleUtils.getJobKey(jobId, jobGroup));
	}

	/**
	 * 恢复任务
	 * 
	 * @param job 调度信息
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public void resumeJob(SysJob job) throws SchedulerException {
		String jobId = job.getId();
		String jobGroup = job.getJobGroup();
		job.setStatus(ScheduleConstants.Status.NORMAL.getValue());

		sysJobDaoService.updateById(job);
		scheduler.resumeJob(ScheduleUtils.getJobKey(jobId, jobGroup));
	}

	/**
	 * 删除任务后，所对应的trigger也将被删除
	 * 
	 * @param job 调度信息
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public void delete(SysJob job) throws SchedulerException {
		String jobId = job.getId();
		String jobGroup = job.getJobGroup();
		
		sysJobDaoService.removeById(jobId) ;
		scheduler.deleteJob(ScheduleUtils.getJobKey(jobId, jobGroup));
	}

	/**
	 * 批量删除调度信息
	 * 
	 * @param jobIds 需要删除的任务ID
	 * @return 结果
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public void deleteByIds(List<String> jobIds) throws SchedulerException {
		for (String jobId : jobIds) {
			SysJob job = sysJobDaoService.getById(jobId);
			delete(job);
		}
	}

	/**
	 * 任务调度状态修改
	 * 
	 * @param job 调度信息
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public void changeStatus(SysJob job) throws SchedulerException {
		String status = job.getStatus();
		if (ScheduleConstants.Status.NORMAL.getValue().equals(status)) {
			resumeJob(job);
		} else if (ScheduleConstants.Status.PAUSE.getValue().equals(status)) {
			pauseJob(job);
		}
	}

	/**
	 * 立即运行任务
	 * 
	 * @param job 调度信息
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public boolean run(SysJob job) throws SchedulerException {
		boolean result = false;
		String jobId = job.getId();
		String jobGroup = job.getJobGroup();
		SysJob properties = findById(job.getId());
		// 参数
		JobDataMap dataMap = new JobDataMap();
		dataMap.put(ScheduleConstants.TASK_PROPERTIES, properties);
		JobKey jobKey = ScheduleUtils.getJobKey(jobId, jobGroup);
		if (scheduler.checkExists(jobKey)) {
			result = true;
			scheduler.triggerJob(jobKey, dataMap);
		}
		return result;
	}

	/**
	 * 新增任务
	 * 
	 * @param job 调度信息 调度信息
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public void save(SysJob job) throws SchedulerException {
		validate(job);
		job.setStatus(ScheduleConstants.Status.PAUSE.getValue());
		
		sysJobDaoService.save(job) ;
		ScheduleUtils.createScheduleJob(scheduler, job);
	}

	/**
	 * 更新任务的时间表达式
	 * 
	 * @param job 调度信息
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public void update(SysJob job) throws SchedulerException {
		SysJob properties = findById(job.getId());
		sysJobDaoService.updateById(job) ;
		updateSchedulerJob(job, properties.getJobGroup());
	}

	/**
	 * 更新任务
	 * 
	 * @param job      任务对象
	 * @param jobGroup 任务组名
	 */
	public void updateSchedulerJob(SysJob job, String jobGroup) throws SchedulerException {
		String jobId = job.getId();
		// 判断是否存在
		JobKey jobKey = ScheduleUtils.getJobKey(jobId, jobGroup);
		if (scheduler.checkExists(jobKey)) {
			// 防止创建时存在数据问题 先移除，然后在执行创建操作
			scheduler.deleteJob(jobKey);
		}
		ScheduleUtils.createScheduleJob(scheduler, job);
	}

	/**
	 * 校验cron表达式是否有效
	 * 
	 * @param cronExpression 表达式
	 * @return 结果
	 */
	@Override
	public boolean checkCronExpressionIsValid(String cronExpression) {
		return CronUtils.isValid(cronExpression);
	}
	
	private void validate(SysJob job) {
		if (!CronUtils.isValid(job.getCronExpression())) {
			throw new ChuangkeException("新增任务'" + job.getName() + "'失败，Cron表达式不正确");
		} else if (StringUtils.containsIgnoreCase(job.getInvokeTarget(), ScheduleConstants.LOOKUP_RMI)) {
			throw new ChuangkeException("新增任务'" + job.getName() + "'失败，目标字符串不允许'rmi'调用");
		} else if (StringUtils.containsAnyIgnoreCase(job.getInvokeTarget(),
				new String[] { ScheduleConstants.LOOKUP_LDAP, ScheduleConstants.LOOKUP_LDAPS })) {
			throw new ChuangkeException("新增任务'" + job.getName() + "'失败，目标字符串不允许'ldap(s)'调用");
		} else if (StringUtils.containsAnyIgnoreCase(job.getInvokeTarget(),
				new String[] { ScheduleConstants.HTTP, ScheduleConstants.HTTPS })) {
			throw new ChuangkeException("新增任务'" + job.getName() + "'失败，目标字符串不允许'http(s)'调用");
		} else if (StringUtils.containsAnyIgnoreCase(job.getInvokeTarget(), ScheduleConstants.JOB_ERROR_STR)) {
			throw new ChuangkeException("新增任务'" + job.getName() + "'失败，目标字符串存在违规");
		} else if (!ScheduleUtils.whiteList(job.getInvokeTarget())) {
			throw new ChuangkeException("新增任务'" + job.getName() + "'失败，目标字符串不在白名单内");
		}
	}
}
